Printing-telegraph receiver.



C. G. ASHLEY.

PRINTING TELEGRAPH RECEIVER.

APPLICATION FILED FEB. 23. IBM. RENEWED APR. 12.1915.

l 1 6 1 1 05. Patented NQV. 23, 1915.

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llNllTED STATES PATENT @FFTQE.

CHARLES G. ASHLEY, OF CHICAGO, ILLINOIS, ASSIGNOB TO GENERAL ENGINEERING AND CONSTRUCTION COMPANY, LIMITED, OF TORONTO, CANADA, A CORPORATION OF ONTARIO.

memos.

Specification of Letters Yatent.

PRINTING-TELEGRAPH RECEIVER.

Patented Nov. 23, 1915.

Application filed February 23, 1911, Serial No. 610,161. Renewed April 12, 1915. Serial No. 20,944.

To all to ham it may concern:

Be it known that 1, CHARLES G. ASHLEY,

graph Receivers, of which the following is a specification.

My invention relates to automatic printing telegraph systems of the class using printed characters which, from the nature of their making, may be termed composite characters, and embodies a novel and. improved form of receiver for such systems.

It is with a view toward simplifying the mechanism and manufacture, and increasing the efficiency of operation of the printing telegraph receivers that my present invention is directed. These and other desirable features which will subsequently be disclosed herein, I accomplish by employing a plurality of insulated springs each bear ing a printing element normally held out of contact with the receiving surfacethrough the tendency of the spring to assume a substantially or totally relaxed normal position. An armature pivoted above the springs is polarized to normally occupy a position which'allows the springs to assume The armature is electromagnetically operated to bring the printing elements in insulated groups intocontact with the receiving surface againstthe inherent tension of the springs bearing the elements; the recording of any element or pen face in contact with the receiving surface is accomplished selectively by electrolytic means co-acting with variant potentials. 7

In the figures which accompany and form a part of this specification and in which like numerals designate corresponding parts throughout; Figure lillustratesin diagram my improved receiver, a forinof transmit ter, the line conductors and operating circuits. Fig. 2 is a plan View of the under portion of my improved receiver shown in elevation at the left of F ig. 1. Fig. 3 is a magnified view of the" monogram or imprints of the printing type elementsasthey wouldappear were all of the types blocks 10, 10 11 and 11 printed'upon a stationary recording surface.

Fig.4 illustrates a section of transmitting bymeans of the perforations in the transmitting tape of Fig- 1.

My improved receiver, an elevation of which is shown in F ig; 1 and a plan view of the under portion in Fig. 2, comprises a permanent polarizing magnet 10 of substantially rectangular form within which is mounted on a yoke attached to the polarizing magnet 10, a pair of electromagnets 20 and 22, the windings of which are placed on the cores so that an impulse of current of one polarity will cause like magnet poles to be manifest on each of the free ends of the magnets 20 and 22, while a current impulse of the opposite polarity will reverse the magnetic polarity of both free ends of the magnets. The windings are connected in series and to line conductor 34:, and through conductor 83with ground 32. An armature 12 is placed opposite the free ends of the magnets 20 and 22 and between the poles of the polarizing magnet 10. This armature is pivoted at its central portion between two non-magnetic journal plates 8 and 9 by means of the pivot screws 8 and 9. Strips of ivory or other insulating material 12 and 12 are rigidly attached to the under portion of armature 12 near its outer extremities.

F our light springs 1 2, 3 and 4, of brass or other non-magnetic material are rigidly attached at one extremity to the polarizing magnet 10 and are insulated therefrom and from each other by means of the insulating Each spring bears on its free extremity an iron printing element or type face 1, 2 3 and lfl The springs bearing elements 1 and 2 are connected together and to line conductor 35,

-while the springs bearing elements 3 and 1 are likewiseconnected together and through conductor 33 with ground 32. A platinum coated anvil 30 is placed opposite the printing elements 1', 2 3 and i and is adjustable in its distance therefrom by means of the screw 31. A tape 30 sensitized with any of the well known chemical compounds 91 electrolytic;printing, such as a mixture while a :zontal.

armature 12 are of such length as to extend of nitrate of ammonium, chlorid of ammonium and red prussiate of potassium, rests on the surface of the anvil in a position to receive the impressions from any one of the printing type faces.

The transmitter shown at the right in Fig.

.1 comprises. a pair of direct current dynamos 23 and 2 1-. or other sources of current, their terminals of opposite polarity being connected together and to the ground 25,

while the positive terminal of dynamo 23 is connected to brushes 1& and 14 and the negative terminal of dynamo 2% is connected to brushes 1% and 14 A brush 13 is of sufficient width to bear upon both brushes l-iv and 14 and make contacttherewith, brush 16 is of sufficient width to bearupon both brushes 14 and 1-1 and make contact therewith. Brushes 13 and 16 are normally held out of contact with-their adjacent pair of brushes byv a transmitting tape 17. Conductor 3% is connected tobrush v16, while conductor 35 is connected to brush13. I V

Referring again to the receiver, the armai ture is formed with substantially pointed extremities as shown. ,The poles of the polarizing magnet 10, are likewise formed to a substantlal point in order to bring the magnetic poles or points of greatest flux density to approximately points in the same plane and thereby tend to hold the armature 1-2 normally with its longitudinal axis in this plane, or as shown, substantially hori- The ivory strips 12 and 12 of across the width ofthearmature and are of sufficient height to rest lightly. against the vsprings 1, 3 'and'2, 4; respectively when the c armature 12 is in a'normal or substantially horizontal position, as shown, under the influence of the polarizing magnet 10.

It will be notedthat if an impulse of predetermined polarity-be sent over line conductor 84c and ground, one of the magnets 20 and 22 will be energized to annul its normal polarization, attract one end of armature 12 and repel the oppositeend, for by influence on'magnet a positive and negative'pole is induced on the armature 12. -Hence if a positive impulse or currentbe sent through the magnets and 22.;and

south poles be created therebyon-the free ends of magnets20 and 22, the left end of armature 12 as viewed in Fig. 1. will be attracted to magnet 2-0, thus causing the rotation of armature 12 about its support andcausing the ivory strip12 to-bringsprings ,2 and 4 bearing type faces 2 and Pinto contact with the receiving surface 80.

It follows that a negative impulse of current through the windings of magnets 20 and 22 will cause north poles to be manifest on each of the free extremities of I magnets 20 and 22, thereby attractmg the right extremity of armature 12 as viewed in Fig. 1 and causing the ivory strip 12 to bring springs 1 and 3 bearingtype facesl and 3 ,int0 contact with the receiving surface 30. If now the anvil 30 be platinum or coated with platinum, the, pen faces iron and the tape 30 impregnated with a compound as that mentioned hitherto herein, it is'obvious that either pen face of a pair i-n contact with the surface '30 may be imprinted upon the surface, dependent upon which pen face of a pair is at a positive'potential with'respect 1013118 surface :30. Bymeans of a transmitting device which will selectively operate armature 12 to depress springs 1 and '3 or 2 and't and simultaneously selectively place either positive, or negative potential with respeotto the recording surface 30. on either .of'thexpen faces borne by springs 1, 8, or

2,1,,either of the four penfaces 1, 2 3 or e may be selectively and successively recorded on the recording surface 30 to form completeand legible characters.

Referringaagain to the transmitter shown at the right of Fig. 1, it will be noted that by: the. :proper transverse-spacing .of the perforationsin the tape-17-with respect tothe brushes 141. and 1 1, positive or negative impulses of' current may be sent over line conductor. 34,-andground to .operate either pair of springs 2,4 or'l, Sand cause the pen faces'borne thereby to make contact with the sensitized tape 30; that by a proper transverse spacing of the perforations in the tape 17 with respect to the brushes 14 and l l gthe potential of the penfaces with respect to the sensitized tape-30 andanvil 30 may over conductor 35 and 1 ground be changed at will. :Hence, by predetermined spacing in-the tape 17, of these two sets of perforations above noted, either pair of springs :1, 3 or 2, 4 maybe simultaneously operated to bring their pen faces 1, 3 or 2 1 into; contact with the recording tape 30 and any of the pen faces maybe given a positive potentialw-ith respect to the sensitized tape 30. to cause the recording upon thetape f aparticular type face.

Referring now to Fig. 3 whichshows an enlarged View of the penfaces as they would appear were-all of the types :printed on a stationary surface, or; it. may be considered I a plan view of the printing elements in their tape perforated'to send the letters H, A, S, r

by means of the deviceof Fig. 1." The longitudinal lines 15, 15 15 and 15 correspond-to the lines of contact ofthe brushes 14, 14 and 14: respectively, with the brushes 13 and 16. Thetransverse lines 4?, 8, 2 and 1 are placed a distance apart equal to or proportional to the unit of width of the necessary to place a perforation in the tape 1 17 along the lines 15 or 15 and to select the particular pen faces of a pair as land 3, it is necessary to place a perforation along the lines 15 or 15 and opposite a perforation along the lines 15" or 15. Conceive nowthe tape 17 to move in the direction indicated by the arrow of Fig. 4: between the brushes 13, 16 and 14C, 14 14; and 14: of Fig. 1 at a speed which allows one transversespacing of the tape 17 to pass through the brushes, while a corresponding interval in the recording tape 30 is passing from right to left as indicated by the arrow of F ig. 5 under the pen faces as viewed in Fig. 3. The letter H may now be recorded as follows: The tape 17 passes through the brushes of the transmitter until the perforations along the line l permit contact between the brushes 145 and 16 and brushes 14 and 13, thereby sendinga positive impulse of current over line conductor 3-1 through the magnets 22 and 20 and ground, causing south poles to be manifest on both of the free ends of magnets 22 and 20 and thereby repelling the right extremity of armature 12 as viewed in Fig. 1 and simultaneously attracting the left extremity which causes pen faces 2 and i to be brought simultaneously into contact with the receiving surface against the inherent tension of the springs 2 and 1.. Simultaneously with this impulse an impulse of negative polarity is sent which traverses ground, conductor 38, spring I, pen face tape 30, anvil 30, tape 30', pen face 2 spring 2, line conductor 35 and is grounded through the transmitter. Thus pen face 1 is caused to become positive with respect to the recording surface 30 and hence records its impression thereon. After a time interval of elght units, pen face 41: 1s again 1mprinted as above indicated and after two time intervals, pen face 2' is printed by sending through conductor 34: a positive impulse and simultaneously reversing the direction of the current flow through the pen faces 2 and a which causes pen faces 2 and 2 to make contact with the receiving surface 30 and simultaneously places a positive potential with respect to the receiving surface 30 on pen face 2 thuscausmg its imprintand not theimprint of pen facet;

As the imprint of pen 2 abuts at its two extremities with theprevious imprints of pen 1*, thelet-ter His recorded on the receiving tape 30 as shown in Fig. 5. Similarly the letters A and S may be recorded as may all the characters of the roman alphabet.

It will be observed from the foregoing that in my invention the springs by their inherent tension assume anormally relaxed position which holds the pen face from contact with the receiving surface and are brought into contact therewith against their inherent tension by electromagneticmeans. The armature 12- as its extremities are pointed and as the poles of the polarizingmagnet 10 are likewise pointed and lie in one plane, will under the influence of magnet 10, as-

sume a normal position with its longitudinal axis in the plane of the poles at its extremities and those of the magnet 10. The armature 12 is dead heat in its action as the ivory strips 12 and 12 bear against the pairs of springs l, 3 and 2, at respectively, thus causing thesprings to act as dampers to the motion of armature 12 when released from the influence of the current impulses through the windings of magnets 20 and 22. As the free ends of the magnets QOand 22 will normally by influence of the polarizing magnet 10 manifest repellent poles to the induced poles on the extremities of armature 12 as indicated in Fig. 1, the armature will further becaused to become dead beat. 7 While I have illustrated and described on embodiment of my device, it is to be clearly understood that I may make numerous changes therein without departing from the spirit or narrowing the scope of my invention.

Having thus described my invention, what I claim as new and desire to secure by United States Letters Patent is as follows:

1. In a receiver for printing telegraph systems, a receiving surface, a plurality of groups of printing pens, an armature, means for maintaining said armature in a normal position, means whereby said armature ;is caused to depress a group of said printing pens to make contact with said receiving surface and further means for selectively imprinting on said receiving surface any one of said pens of said group.

2. In a receiver for printing telegraph systems, a receiving surface, a plurality of printing pens, an armature, magnetic means for maintaining said armature in a normal position, means whereby. said armature is group of "ceiv-ing surface therefor, an armature,'means for maintaining said armature in a non-operative position, means for operating said armature to depress predeterminedfgroups of said pens into acondition of potential opmeans for maintaining said armature in a non-operative positlon, means for operating said-armature to bring predetermined groups of said pens into a condition of potential operation and further means for selectively imprinting on said receiving surface from a group of said pens in potential operation any one of said pens,

5. In a receiver for printing telegraph systems, a plurality of groups of printing pens, an operating armature common to all of said pens, -means for holding said armature in a normal non-operative position, means cooperative With said armature for operating a group of said printing pens and further means for imprinting on a receiving surface any one of said pens of anoperated pens.

6. In a receiver for printing telegraph systems, a plurality of printing pens, an armature therefor, magnetic means for holding said armaturein a normal non-operative position, meanscooperative' With said armature for depressing said printing pens selectively in groups and further means for'imprinting ona receiving surface any one of the pens of said operated group of pens.

7. In a receiver for printing telegraph systems, a plurality of printing pens, an

armature therefor, means for maintaining said armature in a normal position, an electromagnet operating said armature against the spring tension of said pens to move said pens and further means for imprinting any one'of said moved pens.

8. In a receiver for printing telegraph systems, a receiving surface, a plurality of printing pens, a pivoted armature therefor, a polarizing magnet for maintainingsaid armature in a non-operative-normal position, an electromagnet adapted When energized to rotate said armature out of a normal position to cause the depression'of'a group of said printing pens Wherebysaid. group of pens may make contact With said receiving surface and further means Where- 'by any pen of said operated group selectively be imprinted on said receiving surface. a

9. In "a receiver for printing telegraph systems, a receiving surface, a plurality of printing pens, a pivoted armature therefor,

' 1 rea 105 means for maintaining said armature ina non-operative normal position, an electromagnet adapted When energized to rotate said armature out of a normal, position to cause the depression of a' predeterminedsystems, a receiving surface,ya plurality of insulated non-magnetic springs, a plurality of printing elements, one of said elements being borne by each of, said springs, an

armature pivoted adjacent to all of said springs, a polarizing magnet for maintainmg said armature in a normal non-operative position, an electromagnet adapted when energized. to rotate said armature out of a normal position to cause the depression of a predetermined group of said springs whereby said printing elements borne by said springs may make contact with said receiving surface and further means Whereby any element of an operated group of said elements may selectively be imprinted on *sald receiving surface.

11. In a printing telegraph receiver, a record sheet, a plurality of printing pens,

. an operating armature common to all of said pens, means for maintaining said armature in a non-operative position, an electromagnet operating said armature against the spring tension of said pens to move said pens" intocontact with said record sheet and further means for selectively recording the impression of any of said moved pens.

'12. In a printing telegraph receiver, a record sheet, a plurality of printing pens, an operating armature common to all of said pens, means for maintaining said armature in a non-operative position, an electromagnet operating said armature against the spring tension of said pens to move said pens into contact With said record sheet and further means for utilizing current imvpulses of variant polarity to selectively record the impression of any one of said moved pens.

13. In a printing telegraph receiver, a record sheet, a plurality of spring members, a printing member'borne by each of said spring members, an operating armature 'commonto all of said spring members, means for maintaining said armature in a non-operative position, means for operating said armature to depress said springs to bring said printing members into contact with said record sheet and to maintain them in contact therewith Whilesaid armature is in its operative position and to release them "for selectively recording the impression of anyiof said depressed printing members,

lee

Ill. In a printing telegraph receiver, a record sheet, a plurality of springmembers, a printingincmber bornebyeach of said spring members, an operating armature common to all of "said spring members, means for maintaining: said armature in a non-operative position, an electromagnet operating said armature against the tension of said spring members to move said printing members into contact with said record sheet, and further means for utilizing current impulses of variant polarity toselectively record the impression of any of said printing niemben. i

15. In a receiver forprinting telegraph sys-ztcms, a record sheet, a plurality of printsystems, a record sheet, a plurality of spring members, a printing element borne by each of said spring members, an operating armature common to all of said spring members,

magnetic means for maintaining said armature in a normal position, means for utilizing current impulses of variant polarity to operate said armature to depress said elements in predetermined groups to make contact with said record sheet and further means for utilizing other current impulses of variant polarity to selectively record on said record sheet any element of a group of said elements in contact with said recording sheet.

17. In a printing telegraph receiver, a pivoted armature, pens in groups near said armature, a record'sheet, and means for operating said armature to move said pens in groups into contact with said record sheet.

18. In a printing telegraph receiver, a pivoted armature, pens, in groups, a record sheet and a polarized electromagnet con trolling said armature and adapted to move said armature to propel said pens in groups into contact with said record surface.

19. In a printing telegraph receiver, a pivoted armature, pens in groups, a record sheet, a magnet presenting its two poles to said armature and adapted to maintain said armature normally in a median position, and further magnets for operating said armature.

20. In a printing telegraph receiver, a pivoted armature, pens in groups, a record sheet, a inagnet presenting its two poles to the ends of saidarinature when in a normal median positionpand electromagnets near said armature andadapted to rotate it selectively in direction to propel said pens in groups into contact with said record sheet.

21.111 a printing telegraphreceiver,a pivoted armature, pens, in pairs near said armature, an electrolytic record sheet, means for operating said armature to move a selected pair of pens into contact with said record sheet, and an electrolytic conducting path through said receiver and comprising as parts said electrolytic record sheet and the two pens in contact therewith.

22. In a printing telegraph receiver, an armature, pens in pairs, an electrolytic'rec- 0rd sheet, a polarized elcctromagnet controlling said armature and adaptedto move said armature to propel a pair of said pens into contact with said record surface, and an electrolytic conducting path through said receiver and comprising as parts said electrolytic record sheet and the two pens of the pair in contact therewith.

23. In a printing telegraph receiver, a pivoted armature, pens in pairs, an elec- .trolytic record sheet, a magnet presenting its two poles to the ends of said armature when in its normal median position, electromagnets near said armature and adapted to rotate selectively as to direction to propel a pair of said pens into contact with said record sheet, and an electrolytic conducting path through said receiver and comprising as parts said electrolytic record sheet and.

thetwo pens of the pair in contact therewith.

24. In a printing telegraph receiver, a pivoted armature, pens in groups near said armature, a record sheet, an eleetroinagnet near said armature and adapted to rotate it selectively in direction to propel said pens in groups into contactwith said record surface.

25. In a receiver for printing telegraph systems, a record sheet, a plurality of insulated non-magnetic springs, a plurality of printing elements, one of said elements being borne by each of said springs, an armature pivoted adjacent to all of said springs, a polarizing magnet for maintaining said armature in a normal non-operative position and an electromagnet adapted when energized to rotate said armature out of a normal position to causethe depression of a predetermined group of said springs whereby said printing elements borne by said springs may make contact with said record sheet.

26. In a printing telegraph system, an electrolytic printing device comprising pairs of printing pen electrodes movable into and out of contact with an electrolytic printing surface, a continuously operative polarizing circuit for saidlprinting pen electrodes, anfintermittently operable device; for pro pelling selected, pairs, of printing; pen, elec trodes into cont-act with said electrolyticrsurr 1 face in predetermined ,onderandiin predetermined; synchronism; with; the currents in; sald pola-rlzlng c1rcu1t.

27. In a printing; telegraph--receiver,

- groupsof printing pens,- mechanieal:,mea;ns; for depressinga selected group intocontactp With a printing; surface;- and electrolytic.

means forimprinting; but one lpen oi thedes pressed group upon the printing-surface.

28.In a printing telegraph. receiver;

groups of pens; aprintingsurf-aceg conduct ing paths for connectionbof: two line circuits, the first path containing; electromag netic means for: a depressing a; selected group,

of said printing pens into contact: with said- 1 printing surface; the 7 second: path: passing;

through the pens of the depressed group i and the printing surface, only v While 1 the: group is depressed, whereby-- eleetrolytici resend.

mealt me may beunade upon the surface of some pens of thBjgE011pibl1tiIl0t ofothers. 'T

29;. Afiseries ofisprintingipensa pen operatingzrarm,;magnetic means for holding thevarme ininizmal: position,- electrically con-- trolled meansfor inovingssaidrarm in a plu-r rality ofidirectionsto actuate selected groups of;.=-pens,;and meansyfor causingi a printjtobe-J'nade; by.- a desired pen: in the selected groupr 30;, The combination with aplurality of two witnessess I CHARLES:- Gr. ASHLEY, Witnesses:

Wlvn HERDMAN, D: S; TOUELL.

Copies of this patent may bevohtainediforwfivercents eaeh by-addressing;the Gommissionenofiatents,

Washington, J). .01

I mag etie: means for I normally holding said 

